Neopavrine
乙基罂粟碱
🗣️ 情景例句
Why don't you call back later this afternoon?
你何不今天下午再来电话呢？
Johnny doesn't like me.
乔妮不喜欢我。
and we control it by means of the mud which we circulate down the drill pipe.
我们让泥浆顺着钻杆向下循环，用这种方法来控制压力。